Self-interest speaks all sorts of tongues, and plays all sorts of roles, even that of disinterestedness.

Self-interest speaks all sorts of tongues, and plays all sorts of roles, even that of disinterestedness.

自利说着各种各样的语言，扮演着各种各样的角色，甚至是无私的角色。

-- François de La Rochefoucauld 弗朗索瓦德拉罗切福科